include/xmloff/fasttokenhandler.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef INCLUDED_XMLOFF_FASTTOKENHANDLER_HXX
  11 #define INCLUDED_XMLOFF_FASTTOKENHANDLER_HXX
  12
  13 #include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
  14 #include <cppuhelper/implbase1.hxx>
  15 #include <sax/fastattribs.hxx>
  16 #include <xmloff/token/tokens.hxx>
  17 #include <rtl/instance.hxx>
  18 #include <xmloff/dllapi.h>
  19
  20 namespace xmloff {
  21 namespace token {
  22
  23 class TokenMap
  24 {
  25 public:
  26     explicit TokenMap();
  27             ~TokenMap();
  28
  29     /** Returns the token identifier for the passed OUString (UTF-16) token name. */
  30     static sal_Int32 getTokenFromUnicode( const OUString& rUnicodeName );
  31
  32     /** Returns the UTF-8 name of the passed token identifier as byte sequence. */
  33     css::uno::Sequence< sal_Int8 > getUtf8TokenName( sal_Int32 nToken ) const
  34     {
  35         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
  36         if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
  37             return maTokenNames[ nToken ];
  38         return css::uno::Sequence< sal_Int8 >();
  39     }
  40
  41     /** Returns the token identifier for the passed UTF-8 token name. */
  42     static sal_Int32 getTokenFromUtf8( const css::uno::Sequence< sal_Int8 >& rUtf8Name )
  43     {
  44         return getTokenFromUTF8( reinterpret_cast< const char* >(
  45                     rUtf8Name.getConstArray() ), rUtf8Name.getLength() );
  46     }
  47
  48     /** Returns the token identifier for a UTF-8 string */
  49     static sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength )
  50     {
  51         return getTokenPerfectHash( pToken, nLength );
  52     }
  53
  54 private:
  55     static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
  56
  57     std::vector< css::uno::Sequence< sal_Int8 > > maTokenNames;
  58 };
  59
  60 struct StaticTokenMap : public rtl::Static< TokenMap, StaticTokenMap > {};
  61
  62 class XMLOFF_DLLPUBLIC FastTokenHandler : public cppu::WeakImplHelper1<
  63     css::xml::sax::XFastTokenHandler >,
  64     public sax_fastparser::FastTokenHandlerBase
  65 {
  66 public:
  67     explicit FastTokenHandler();
  68     virtual ~FastTokenHandler() override;
  69
  70     // XFastTokenHandler
  71     virtual css::uno::Sequence< sal_Int8 > SAL_CALL getUTF8Identifier( sal_Int32 nToken )
  72         throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  73     virtual sal_Int32 SAL_CALL getTokenFromUTF8( const css::uno::Sequence< sal_Int8 >& Identifier )
  74         throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  75
  76     // Much faster direct C++ shortcut to the method that matters
  77     virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const SAL_OVERRIDE;
  78
  79 private:
  80     TokenMap& mrTokenMap;
  81 };
  82
  83 } // namespace token
  84 } // namespace xmloff
  85
  86 #endif
  87
  88 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */